Integrated gate position and limit acquisition method and device

Abstract

According to the integrated gate position and limit acquisition method and device, linear motion of the gate is converted into rotation of the gears through the accurate transmission ratio between the gears, then tiny displacement changes are amplified or reduced, the sensitivity and accuracy of gate position monitoring are improved, and the problem that a traditional device is not high in precision is solved. The position of the gate is adjusted according to the height and actual requirements of the gate, a traditional gate level meter and a limiting switch are combined to form an integrated device, the transformation ratio gear, the PLC and the resistance strain type linear displacement sensor work cooperatively, all-directional and high-precision monitoring and control over the position of the gate are achieved, and the safety of the gate is improved. The integrated design not only reduces the size and complexity of the device, but also improves the stability and reliability of the device by optimizing the connection and communication among the parts, and in the aspect of installation, the integrated design enables the overall structure of the device to be more compact, and reduces the installation steps and required space.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy projects and relates to an integrated gate position and limit collection method and device. Background Art

[0002] The integrated gate position and limit acquisition device is a key device used in fields such as water conservancy, electricity, and municipal administration to collect gate position information and limit status. Its working principle is to convert the mechanical displacement of the gate into an electrical or digital signal to obtain gate position information, and use devices such as limit switches to trigger the signal to determine the limit status. In practical applications, the integrated gate position and limit acquisition device usually includes the following key components:

[0003] 1. Mechanical structure: including gear set, limit switch slide, micro travel switch baffle and base, etc., which is responsible for accurately transmitting the movement of the gate and converting it into a detectable signal.

[0004] 2. Electrical part: It is composed of PLC, linear displacement sensor, micro limit switch and other electrical components to realize signal processing, transmission and control functions.

[0005] Currently, to effectively control and monitor gates, a variety of gate position and limit position acquisition devices are available on the market. Some utilize contact-based acquisition devices, such as mechanical limit switches and resistive displacement sensors; others employ non-contact acquisition devices, such as infrared, ultrasonic, and laser sensors. Some devices utilize optimized structural designs to enhance their anti-interference capabilities and stability.

[0006] However, the above existing devices still have the following problems:

[0007] 1. The existing gate position and limit acquisition devices are difficult to meet the high-precision requirements in terms of measurement accuracy. For example, some devices have large measurement errors in the range of 0-10m and cannot meet the high-precision standard of ±1cm, and cannot accurately control and monitor the gate opening.

[0008] 2. Most devices are difficult to install and cannot flexibly adapt to different gate structures and installation environments. It is difficult to maximize the use of the stroke within a limited internal stroke range and cannot adapt to most gate openings.

[0009] 3. The degree of informatization is low and the communication method is single, which makes it difficult to meet the needs of automated control and affects the service life and reliability of the equipment. Summary of the Invention

[0010] To solve the above problems, the present invention proposes an integrated gate position and limit acquisition method and device. Based on innovative mechanical structure design and electrical part optimization, combined with precise control methods, the device accuracy, installation convenience, applicability and reliability are improved to meet the actual needs of water conservancy automation.

[0011] To achieve the above object, the technical solution of the present invention is as follows:

[0012] The integrated gate position and limit position collection method includes the following steps:

[0013] In the initial state, there is a certain distance between the limit block and the limit slot, and they do not contact each other; when the door panel moves, the connecting plate moves with the door panel, and the right-angle gear 1 connected to the connecting plate gear slot rotates, and the right-angle gear 1 drives the right-angle gear 2 fixed to it to rotate together. The monitor monitors the rotation of the right-angle gear 2, and through the transmission ratio between the gears, the linear motion of the gate is converted into the rotation of the gears;

[0014] The resistance strain linear displacement sensor monitors the actual gate opening in real time and transmits the data to the PLC. At the same time, the encoder transmits the data reflecting the gate position it obtains to the PLC. The PLC continuously compares and analyzes the two sets of data. When it detects that there is a mismatch between the opening and the encoder data, an alarm is issued.

[0015] When the lower end of the connecting plate fits with the baffle, the baffle transmits the sensing signal to the controller. After receiving the signal, the controller drives the cylinder to start. The start of the cylinder will drive the limit block to move. The limit block approaches the limit slot and engages with the limit slot, thereby limiting and fixing the connecting plate. The door panel fixed to the connecting plate is also limited and fixed.

[0016] Furthermore, when it is detected that there is a mismatch between the opening and the encoder data, an alarm is issued and a gear set with a suitable gear speed ratio is selected. After adjustment, the PLC continuously monitors the data from the linear displacement sensor and the encoder, and compares the opening with the encoder data again. If there is still a mismatch, continue to adjust according to the above steps until the opening matches the encoder data to ensure that the gate position is consistent with the set value.

[0017] An integrated gate position and limit collection device is used to realize the above-mentioned integrated gate position and limit collection method, including a gate plate, a door plate that can move up and down is provided in the gate plate, a connecting plate is provided on one side of the gate plate, and the connecting plate is fixedly connected to the door plate; a card slot is provided on the surface of the gate plate, a connecting block is fixed in the card slot, the connecting block is rotatably connected to a right-angle gear 1, the right-angle gear 1 is fixedly connected to the right-angle gear 2 through a connecting rod, and the right-angle gear 2 is rotatably connected to the gate plate; a controller is fixed on the connecting plate, and a group of gear grooves are provided on the surface of the connecting plate facing the door plate, and the gear grooves can be movably engaged with the outer teeth of the right-angle gear 1; a slider is provided on the surface of the connecting plate, A group of limit grooves are longitudinally opened on the surface of the gate plate, and slide grooves are set on both sides of the limit grooves. The slide grooves are arranged parallel to the limit grooves. A limit block is set on the side of the slider facing the slide groove. The limit block can be mutually engaged with the limit groove. The limit block is connected to the driving mechanism, and the driving mechanism can drive the limit block to move in a direction perpendicular to the slide groove; a trigger mechanism is also provided on the gate plate, and the trigger mechanism is on the moving path of the connecting block. When the trigger mechanism is triggered by the connecting block, the trigger signal is transmitted to the controller; a monitor is also included, and the monitor is used to collect the rotation data of the right-angle gear two and transmit it to the controller, and the controller is used to receive data and control the action of the driving mechanism.

[0018] Furthermore, a bracket is fixed on the gate plate, the right-angle gear 2 is rotatably connected to the bracket, and the monitor is fixed on the bracket for collecting rotation data of the right-angle gear 2.

[0019] Furthermore, two limiting rods are fixed on the surface of the connecting plate, the limiting rods are arranged parallel to the sliding grooves, and the sliding block is sleeved on the limiting rods and can slide along the limiting rods.

[0020] Furthermore, a group of circular grooves with internal threads are opened on the surface of the connecting plate, and two fixed plates are fixedly connected to the left surface of the slider. The distance between the two fixed plates is equal to the distance between adjacent circular grooves, and the two fixed plates are connected to the connecting plate by screws.

[0021] Furthermore, the driving mechanism is a cylinder, and the cylinder piston is fixedly connected to the limit block.

[0022] Furthermore, the trigger mechanism is a blocking piece.

[0023] Furthermore, the monitor is an encoder.

[0024] The beneficial effects of the present invention are:

[0025] 1. This invention utilizes precise gear ratios to convert the gate's linear motion into gear rotation, thereby amplifying or minimizing minute displacement changes. This improves the sensitivity and accuracy of gate position monitoring, resolving the low accuracy issues of traditional devices. When there's a mismatch between the actual gate opening and the encoder data, repeated calculations and data collection can yield a more appropriate gear ratio, guiding hardware debugging and replacement, and achieving precise gate position control.

[0026] 2. This invention adjusts the slider position based on gate height and actual needs, combining a traditional gate level meter with a limit switch to form an integrated device, simplifying on-site installation and shortening the construction period. The variable ratio gear, PLC, and resistance strain gauge linear displacement sensor work together to achieve comprehensive, high-precision monitoring and control of gate position. This integrated design not only reduces the size and complexity of the device but also improves its stability and reliability by optimizing the connections and communication between its components.

[0027] 3. The present invention adopts a modular design, supports the rapid replacement of gear sets or sensors, and reduces maintenance costs. Compared with similar products on the market, it reduces material waste by optimizing the gear ratio design, reduces costs by 20% to 30%, extends the service life of the gate, and reduces the maintenance costs of safety accidents caused by over-positioning. The double limit protection (mechanical + electrical) and electromagnetic isolation design significantly reduce equipment damage and personnel operation risks. The PLC real-time monitoring and remote communication functions support intelligent management, reduce human operational errors, and adapt to more than 90% of gate opening requirements. It is suitable for water conservancy projects, flood control facilities, agricultural irrigation and other scenarios.

[0028] 4. This invention solves the pain points of traditional gate position and limit devices, such as low precision, susceptibility to environmental interference, and complex installation, through the integrated innovation of precision mechanical transmission + intelligent electrical control + environmental adaptability design. The overall high-precision positioning is achieved through the collaboration of variable ratio gears and PLC. Mechanical triggering and sealing protection ensure long-term reliable operation, low cost, low maintenance, and long life, significantly improving the management efficiency of water conservancy projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of the integrated gate position and limit collection device provided by the present invention.

[0030] Figure 2 This is a schematic diagram of the overall explosion structure of the integrated gate position and limit collection device provided by the present invention.

[0031] Figure 3 This is a schematic diagram of the connecting plate structure in the integrated gate position and limit collection device provided by the present invention.

[0032] Figure 4Another angle view of the connecting plate in the integrated gate position and limit collection device provided by the present invention.

[0033] Figure 5 This is a schematic diagram of the connection between two right-angle gears in the integrated gate position and limit collection device provided by the present invention.

[0034] Figure 6 This is a schematic diagram of the slider structure in the integrated gate position and limit collection device provided by the present invention.

[0035] List of Figure Symbols:

[0036] 1. Gate; 2. Connecting plate; 3. Controller; 4. Limiting groove; 5. Card slot; 6. Block; 7. Cylinder; 8. Slide; 9. Limiting rod; 10. Connecting block; 11. Right-angle gear 1; 12. Right-angle gear 2; 13. Circular groove; 14. Fixing plate; 15. Slider; 16. Gear groove; 17. Bracket; 18. Monitor; 19. Limiting block; 20. Rectangular groove. DETAILED DESCRIPTION

[0037] The technical solutions provided by the present invention will be described in detail below with reference to specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0038] See also Figures 1 to 6 The integrated gate position and limit acquisition device provided by the present invention includes a gate plate 1, in which a door plate that can move up and down is provided. The up and down movable mechanism of the door plate is the same as that of the prior art and will not be described in detail in the present invention. Figure 2As shown, a connecting plate 2 is provided on the left side of the gate plate 1. Connecting plate 2 is fixedly connected to the door panel within the gate plate 1. A controller 3 is fixedly mounted on the left surface of connecting plate 2. Controller 3 receives signals from monitors, baffles, and other components, and makes decisions based on these signals to drive actuators such as cylinders. A slot 5 is defined on the left surface of the gate plate 1. A connecting block 10 is fixedly mounted within slot 5. A right-angle gear 11 is rotatably connected within connecting block 10. A right-angle gear 12 is rotatably connected to the rear surface of the gate plate 1. A connecting rod is fixedly mounted to the front surface of right-angle gear 12, and right-angle gear 11 is fixedly connected to the connecting rod. A set of gear slots 16 are defined on the right surface of connecting plate 2. These serrated gear slots 16 are capable of flexibly engaging with right-angle gear 11, allowing right-angle gear 11 to roll along the gear slots 6. A bracket 17 is fixedly mounted on the rear surface of the gate plate 1. A monitor 18 is fixedly mounted within bracket 17. Right-angle gear 12 is rotatably connected to bracket 17. When the device is running, the movement of the gate drives the connecting plate 2 to move together. The movement of the connecting plate 2 will drive the connected right-angle gear 11 to rotate. When the right-angle gear 11 rotates, it will drive the fixed right-angle gear 2 12 to rotate together. The monitor 18 monitors the surface rotation of the right-angle gear 2 12. The monitor can use an encoder. The encoder is associated with the rotating gear. When the gear rotates, the encoder moves accordingly. By scanning with a photoelectric coupler, the speed, position, angle and other information of the mechanical movement are converted into electrical signals, thereby obtaining encoder data. The monitor indirectly obtains the displacement of the gate by monitoring the rotation of the gears, and thus knows the opening position of the gate. The present invention converts the linear motion of the gate into the rotation of the gears through the precise transmission ratio between the gears, and then amplifies or reduces the tiny displacement changes, thereby improving the sensitivity and accuracy of the gate position monitoring and solving the problem of low accuracy of traditional devices. Specifically, by adjusting the diameter or tooth ratio of the master and driven gears (i.e., the transmission ratio), tiny linear displacements can be amplified into larger angular rotations of the gears, making it easier for monitors (such as encoders) to capture displacement changes, thereby improving monitoring sensitivity and accuracy. If the displacement change itself is large, direct monitoring may result in large errors due to insufficient precision. In this case, by reducing the displacement change, the larger displacement can be converted into a smaller angular rotation of the gears, allowing more sophisticated monitoring equipment (such as encoders) to accurately monitor the gear rotation, thereby improving the monitoring accuracy of the gate position.

[0039] Specifically, the right-angle gear 11 and the right-angle gear 2 12 have a certain ratio relationship within a limited range to achieve the accuracy required by the present invention. The device studies the precision gear speed ratio and calculates and forms a set of gear ratio formulas based on the different models of master and driven gears and the diameters of the driven gears. It configures precision gear sets of different standards. The accuracy requirements of this device are within the range of 0-10m with a maximum allowable error of ±1cm and a mechanical transmission accuracy of ≤0.1mm. The aforementioned ratio formula is:

[0040]

[0041] Where i is the transmission ratio, D1 and D2 are the diameters of right-angle gear 1 and right-angle gear 2, respectively, and N1 and N2 are the number of teeth on the two gears. By adjusting the transmission ratio, the linear displacement L of the gate can be converted into the rotation angle θ of the gear:

[0042]

[0043] A slider 15 is located in front of the connecting plate 2. Two limit rods 9 are fixedly connected to the surface of the connecting plate 2. Both limit rods 9 are movably connected to the sliders 15. The slider 15 is provided with two sliding holes, through which the slider 15 is inserted into the limit rods. The limit rods serve as a guide for the slider. Two chute slots 8 are defined on the front surface of the gate plate 1. Both chute slots 8 are movably connected to the sliders 15. A retaining plate 6 is fixedly mounted on the front surface of the gate plate 1. The retaining plate 6 serves as a trigger mechanism and is located below the chute slots. The gate plate 1 (excluding the movable gate) is movably connected to the connecting plate 2, which is fixedly connected to the door panel within the gate plate 1. A limit block 19 is movably engaged within the slider 15. A cylinder 7 is fixedly mounted on the front surface of the slider 15. The piston of the cylinder 7 is fixedly connected to the limit block 19. A set of limit slots 4 are defined on the front surface of the gate plate 1, each of which is capable of engaging with the limit block 19. In this example, the limit blocks and limit slots are provided with serrations of matching sizes. The cylinder 7 can also be replaced by other linear drive components, such as a linear motor. Regarding installation, the integrated design makes the overall structure of the device more compact, reduces the number of installation steps and the required space, and solves the problem of inconvenient installation. The front surface of the connecting plate 2 is provided with a set of internally threaded circular grooves 13, which are threadedly engaged with two hexagon socket screws. The left surface of the slider 15 is fixedly connected to two fixed plates 14, each of which is threadedly engaged with the aforementioned hexagon socket screws. The surface of the slider 15 facing the connecting plate is provided with a rectangular groove 20, which is movably engaged with the limit block 19. When the connecting plate 2 moves downward, its lower end will engage the baffle 6. A contact sensor, such as a microswitch, can be provided on the baffle 6. When the lower end of the connecting plate engages the baffle and the baffle 6 is subjected to the external force generated by the displacement of the connecting plate 2, the microswitch converts the pressure exerted on the baffle into an electrical signal, which is then transmitted to the controller 3 for processing. After receiving the signal, the controller 3 drives the cylinder 7 to start, which in turn drives the fixed limit block 19 to move. The limit block 19 moves toward the connecting plate and engages with a set of limit slots 4 on the front surface of the gate plate 1. At this time, the connecting plate 2 is fixed in position. Since the connecting plate 2 is fixedly connected to the door panel inside the gate plate 1, the door panel is also fixed in position. Turning the two hexagon socket screws releases the limit fixation of the slider 15, and the slider 15 can now slide on the connecting plate 2 and adjust its position according to the height of the gate and actual needs.

[0044] The working principle of the present invention is as follows:

[0045] When the device is running, the movement of the door panel drives the connecting plate 2 to move together. The movement of the connecting plate 2 will drive the engaged right-angle gear 11 to rotate. When the right-angle gear 11 rotates, it will drive the fixed right-angle gear 2 12 to rotate together. A monitor 18 is provided on the surface of the right-angle gear 2 12 for monitoring. Through the precise transmission ratio between the gears, the linear motion of the gate is converted into the rotation of the gears, and then the tiny displacement changes are amplified or reduced, thereby improving the sensitivity and accuracy of gate position monitoring and solving the problem of low accuracy of traditional devices. When the connecting plate 2 moves downward, its lower end will fit with the baffle 6. When the baffle 6 is subjected to the external force generated by the displacement of the connecting plate 2, the sensing signal will be transmitted to the controller 3 for processing. After receiving the signal, the controller 3 will drive the cylinder 7 to start. The start of the cylinder 7 will drive the fixed limit block 19 to move together. The limit block 19 moves forward and will engage with a group of limit grooves 4 opened on the front surface of the gate plate 1. At this time, the connecting plate 2 is limited and fixed. The connecting plate 2 is fixedly connected to the door panel in the gate plate 1. At this time, the door panel is limited and fixed.

[0046] This device can also be connected to an external PLC. A resistive strain gauge linear displacement sensor monitors the actual gate opening in real time and transmits the data to the PLC. Simultaneously, the encoder transmits data reflecting the gate position (via the controller) to the PLC for mutual verification. The PLC can continuously compare and analyze these two sets of data to determine whether there is a mismatch between the gate opening and the encoder data. If a mismatch is detected, an alarm message is sent, prompting the need for debugging, inspection, and gear replacement, which can be replaced with a gear set with higher precision and a more appropriate gear ratio. A threshold can be preset in the PLC control. When the difference between the actual gate opening and the opening reflected by the encoder data exceeds the threshold, it is considered mismatched. If the difference is within the threshold, the two are considered consistent. In actual monitoring, there will inevitably be slight deviations between the actual gate opening and the encoder data due to factors such as mechanical transmission clearance and sensor accuracy. If a threshold is not set, the PLC may frequently adjust due to very small errors, resulting in system instability. Furthermore, the PLC will analyze the gate according to the preset program logic, first determining the direction and degree of the misalignment, that is, whether the actual gate opening is greater or less than the opening reflected by the encoder data, and the size of the difference between the two. Based on the judgment result, the PLC calculates the gear ratio value that needs to be adjusted. Through experiments, we established the adjustment parameter k based on the difference between the actual gate opening and the opening reflected by the encoder data, k = α × ε + β × ε sum +γ×(ε-ε pre ), where α, β, and γ are adjustment coefficients, ε is the opening difference, and ε sumis the cumulative value of the opening difference, ε pre is the opening difference value collected last time. If there is no opening difference value collected last time, (ε-ε pre ) is taken as 0. The new gear ratio can be obtained by the following formula: new =i(1±k)×i. Select the appropriate gear set based on the new gear ratio. After adjusting the gear set, the PLC continuously monitors the data from the linear displacement sensor and encoder, and again compares the actual gate opening with the encoder data. If there is still a mismatch, continue adjusting according to the above steps until the opening matches the encoder data, ensuring that the gate position is consistent with the set value. This allows for precise control of the gate position and ensures that the gate position is consistent with the set value.

[0047] The present invention combines a traditional gate position meter and a limit switch to form an integrated device. The variable ratio gear, PLC and resistance strain linear displacement sensor work together to achieve all-round, high-precision monitoring and control of the gate position. This integrated design not only reduces the size and complexity of the device, but also improves the stability and reliability of the device by optimizing the connection and communication between the various parts. The micro switch's single-sided dual-trigger design (front and rear trigger points) provides redundant protection against over-positioning due to single-point failure. Its sealed design, waterproofing, and lightning protection ensure stable operation in harsh environments with temperatures ranging from -20°C to +50°C and 90% humidity. High-voltage and low-voltage circuits are fully physically isolated to prevent electromagnetic interference and electric shock. Prototypes have undergone laboratory testing (such as transmission accuracy and life cycle testing) and their stability has been verified in actual projects. In the event of a fault, the built-in RS485 communication interface supports remote diagnosis, minimizing downtime. Its overall ±1cm error control (0-10m travel) and 0.01mm sensor accuracy far exceed those of traditional mechanical or electronic limit switches. Its mechanical lifespan is ≥100,000 cycles, and its mean time between failures is ≥25,000 hours, reducing maintenance frequency. Its sealed structure, waterproofing, and corrosion-resistant materials ensure its adaptability to the harsh environments of water conservancy projects, such as humidity, dust, and large temperature fluctuations. Its mechanical triggering eliminates the need for a power source, significantly outperforming electronic limit switches in electromagnetic interference resistance.

[0048] This device, through the integrated innovation of precision mechanical transmission, intelligent electrical control, and environmentally adaptable design, addresses the pain points of traditional gate position and limit devices, such as low precision, susceptibility to environmental interference, and complex installation. High-precision positioning is achieved through the coordinated operation of variable-ratio gears and PLC. Mechanical triggering and sealing protection ensure long-term reliable operation. With low cost, low maintenance, and a long lifespan, it significantly improves the management efficiency of water conservancy projects. The development of an integrated gate position and limit device plays an important role in flood control, agricultural irrigation, and environmental protection. During gate operation, it controls the operating position of the gate to prevent gate misalignment or overrun, thereby avoiding safety accidents and protecting personnel and equipment. It helps managers achieve precise scheduling and efficient utilization of water resources, improves water resource management efficiency, enhances gate operation efficiency, reduces downtime caused by human error, extends gate service life, and ensures the normal operation of water conservancy projects. The device is simple to install and highly stable, and each unit can save costs compared to similar devices on the market, with significant price advantages. It also improves water resource utilization efficiency in flood control, agricultural irrigation, and environmental protection, and extends the service life of gates, and is expected to generate significant economic and social benefits.

[0049] It should be noted that the above content merely illustrates the technical idea of ​​the present invention and cannot be used to limit the scope of protection of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications all fall within the scope of protection of the claims of the present invention.

Claims

1. The integrated gate position and limit position acquisition method is characterized in that: The steps include: In the initial state, there is a certain distance between the limit block and the limit slot, and they do not contact each other; when the door panel moves, the connecting plate moves with the door panel, and the right-angle gear 1 connected to the connecting plate gear slot rotates, and the right-angle gear 1 drives the right-angle gear 2 fixed to it to rotate together. The monitor monitors the rotation of the right-angle gear 2, and through the transmission ratio between the gears, the linear motion of the gate is converted into the rotation of the gears; The resistance strain linear displacement sensor monitors the actual gate opening in real time and transmits the data to the PLC. At the same time, the encoder transmits the data reflecting the gate position it obtains to the PLC. The PLC continuously compares and analyzes the two sets of data. When it detects that there is a mismatch between the opening and the encoder data, an alarm is issued. When the lower end of the connecting plate fits with the baffle, the baffle transmits the sensing signal to the controller. After receiving the signal, the controller drives the cylinder to start. The start of the cylinder will drive the limit block to move. The limit block approaches the limit slot and engages with the limit slot, thereby limiting and fixing the connecting plate. The door panel fixed to the connecting plate is also limited and fixed.

2. The integrated gate position and limit position acquisition method according to claim 1, characterized in that: When it is detected that there is a mismatch between the opening and the encoder data, an alarm is issued and a gear set with a suitable gear speed ratio is selected. After adjustment, the PLC continuously monitors the data from the linear displacement sensor and the encoder, and compares the opening with the encoder data again. If there is still a mismatch, continue to adjust according to the above steps until the opening matches the encoder data to ensure that the gate position is consistent with the set value.

3. An integrated gate position and limit acquisition device, comprising a gate plate, wherein a door panel capable of moving up and down is provided inside the gate plate, characterized in that: Used to implement the integrated gate position and limit collection method described in any one of claims 1-2, a connecting plate is provided on one side of the gate plate, and the connecting plate is fixedly connected to the door plate; a card slot is provided on the surface of the gate plate, and a connecting block is fixed in the card slot, and the connecting block is rotatably connected to a right-angle gear 1, and the right-angle gear 1 is fixedly connected to the right-angle gear 2 through a connecting rod, and the right-angle gear 2 is rotatably connected to the gate plate; a controller is fixed on the connecting plate, and a group of gear grooves are provided on the surface of the connecting plate facing the door plate, and the gear grooves can be movably engaged with the outer teeth of the right-angle gear 1; a slider is provided on the surface of the connecting plate, and a longitudinal opening is provided on the surface of the gate plate. A limit groove is provided on each side of the limit groove, and the slide groove is arranged parallel to the limit groove. A limit block is provided on the side of the slider facing the slide groove, and the limit block can be mutually engaged with the limit groove. The limit block is connected to the driving mechanism, and the driving mechanism can drive the limit block to move in a direction perpendicular to the slide groove; a trigger mechanism is also provided on the gate plate, and the trigger mechanism is on the moving path of the connecting block. When the trigger mechanism is triggered by the connecting block, the trigger signal is transmitted to the controller; a monitor is also included, and the monitor is used to collect the rotation data of the right-angle gear two and transmit it to the controller, and the controller is used to receive the data and control the action of the driving mechanism.

4. The integrated gate position and limit position acquisition device according to claim 3, characterized in that: A bracket is fixed on the gate plate, the right-angle gear 2 is rotatably connected to the bracket, and the monitor is fixed on the bracket for collecting rotation data of the right-angle gear 2.

5. The integrated gate position and limit position acquisition device according to claim 3, characterized in that: Two limiting rods are fixed on the surface of the connecting plate. The limiting rods are arranged parallel to the sliding grooves. The sliding blocks are sleeved on the limiting rods and can slide along the limiting rods.

6. The integrated gate position and limit position acquisition device according to claim 3, characterized in that: A group of circular grooves with internal threads are opened on the surface of the connecting plate. Two fixing plates are fixedly connected to the left surface of the slider. The distance between the two fixing plates is equal to the distance between adjacent circular grooves. The two fixing plates are connected to the connecting plate by screws.

7. The integrated gate position and limit position acquisition device according to claim 3, characterized in that: The driving mechanism is a cylinder, and the cylinder piston is fixedly connected to the limit block.

8. The integrated gate position and limit position acquisition device according to claim 3, characterized in that: The trigger mechanism is a blocking piece.

9. The integrated gate position and limit position acquisition device according to claim 3, characterized in that: The monitor is an encoder.

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